Lesson 1: Estimating Whole Number Sums and Differences
Lesson 2: Communicating about Estimating and Calculating
Lesson 3: Estimating Decimal Sums and Differences
Lesson 4: Adding Decimals Using Mental Math
Lesson 5: Adding Decimals by Regrouping
Lesson 6: Exploring Problems that Involve Decimals
Lesson 7: Subtracting Decimals by Regrouping
Lesson 8: Subtracting Decimals by Renaming